Examlex
Dehydration of alcohols requires a ___ catalyst.
Zygote
The initial cell formed when a new organism is conceived, resulting from the combination of a sperm cell and an egg cell.
Embryo
An early stage of development in multicellular organisms, in humans, it refers to the stage after fertilization and before becoming a fetus.
Fetus
A developing mammal or human from the end of the embryonic stage until birth, during which significant growth and organ development occur.
Critical Period
A specific time during development when the brain is particularly receptive to acquiring certain types of information or skills.
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